A steel ball of radius 1 mm is falling vertically through a tank of oil at `30°C` . Write down the expression for resultant force acting on the ball?

A steel ball of radius 1 mm is falling vertically through a tank of oil at 30°C . After sometime the ball attains a constant velocity called cdots

A steel ball of radius 1 mm is falling vertically through a tank of oil at 30°C . If the density of oil is 2×10^2kg/m^3 , density of steel is 8×10^2 Kg/m^3 and eta of oil 2NS/m^2 , what will be the constant velocity attained by the ball?

A small metal sphere is falling through castor oil. Write down the expression for terminal velocity in terms of coefficient of viscosity.

The terminal velocity of a copper ball of radius 2mm falling through a tank of oil at 20°c is 6.5cms^-1 . Calculate the viscosity of the oil at 20°c. .(Hints: Density of oil is is 1.5 × 103 kgm^-3 , density of copper is 8.9 ×10^3 kgm^-3 )

A particle of charge q is moving through a uniform magnetic field of intensity B with a velocity v. Write an expression for the force acting on the particle in a vector form.

The centripetal force depends on mass of the body, velocity and radius of circular path. Find the expression for the centripetal force acting on the body using the principle of dimensional analysis. (Take constant k=1)